Car door



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5 Sheets-Sheet l CAR DOOR G. B. DOREY Filed June 3.

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@Y EN Nov. 3, 1931.

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- CAR DOOR Fned'Jgne y:5; 1929 5 SheetSA-Sheet 2 WM, .a Y y mf B f E WG.

Nov. 3, 1931. G. B. DOREY 1,830,388J

CAR Doon Filed June 3. 1923v 5 Sheets-Sheet 4 FIG' 00 INVENTOR.

l l G50/Q65 a oaf-eff A TTURNEY Nov. 3, 1931. G. B. DOREY 1,830,388

' cARpooR Filed June 5, 1929 5 Sheets-Sheet 5 menea- Nov. a, niza4 AUNITED STATES PATENT OFFICE GEORGE .B. DOREY, Olli EVANSTON, ILLINOIS,ASSIGNOR TO ENTERPRISE RAILWAY EQUIPMENT COMPANY, OF CHICAGO, ILLINOIS,A. CORPORATION OF ILLINOIS CAB DOOR Application led .Tune 3, 1929.Serial No. 367,854.

vof a form whichv will present adequate strength to vreinforce the plateagainst bending and still obviate the tendency` for the plates to tearin process of manufacture.

Still another feature of my invention resides in the peculiar formationof the corrugations adjacent the ends thereof, whereby said corrugationswill present crests of appreciable width at their extreme ends andcooperate with other members to reinforce the 'door intermediate saidmembers.

My invention further resides 'in an 'improved door post construction forthe auX- iliary door of automobile cars and in the mechanism employe forlocking the same relatively to the car s ructure. y

Other objects of the invention will more clearly appear from thedescription and claims hereinafter following.`

In the drawings forming a part of thev specification, Figure 1 is a sideelevational view of a portion of a car showing my improved constructionincorporated therein. Figure 2 is a broken, horizontal, isectlonal vifView, on an enlarged scale, correspondingto line 2-2 of Figure 1. Figure3 is an enlarged, detail, horizontal, sectional view of the door postconstruction of the auxiliary door, said view being taken on a linecorresponding substantially to a line 3 3 of Figure 6. Figure 4 is afragmentary, horizontal, sectional view, generally' similar to Figure 3,and showing a different embodiment of the invention at the meeting edgesof the doors. Figure 5 is an enlarged vertical, sectional view takenthrou h the door on a line' corresponding substantially to the line 5-5of Figure 1. Figure 6 is an enlarged, broken, vertical, sectional viewtaken through the door structure and on a line corresponding to a line6-6 of Figurel. Figure 7 is an enlarged, detail view of a portion of thepanelling illustrating the formation of corrugations adjacent the endsthereof. Figure 8 is an end view of the panelling-shown in Figure 7, asviewed from right to left. Figure 9 is a longitudinal elevational viewof the corrugations shown in Figure 7. Figure 10is a sectional Viewtaken through the corrugations and on a line corresponding substantiallyto line 10-10 of Figure 7. Figures 11 to 13, inclusive, illustrate asomewhat different embodiment of the door post construction.4 Figure 11is a view somewhat similar to Figure V2, being a broken, vertical,sectional elevational view taken through the door. Figure 12 isanenlarged, broken, vertical, sectional view illustratin a different formof post construction, sai view being taken on a line correspondingsubstantially to a line 12-12 of Figure 13, a part of the marginalreinforcement'of the door being broken away adjacent the upper partthereof to better illustrate the construction. Figure 13 is an enlarged,detailed, sectional, horizontal view, somewhat similar to Figure 2,except. that the different embodiment of the inventlon is incorporated.

Referring first to the construction illustrated in Figure 1 to 10,inclusive, the car is prov1ded with an enlarged doorway adapted to beclosed by sliding doors, as indicated at A and B, respectively. The doorA is in the nature of a main door adapted to be normal-I ly used, whiledoor B is an auxiliary door and is adapted for use only when a largedoor opening is desirable.

At the upper' portion of the door opening, 10 indicates the usual topside plate which is preferably 4of Z-shape construction, 11-11 thevertical door posts of the car, 12 the lower side sill of the car, 13the car flooring and 14 the threshold plate.

In the particular embodiment shown, the doors are of the bottomsupported type and for this purpose a supporting track 15 is employed,said track preferably consisting be hereinafter described. Said' track15 is preferably supported from the side sill of the car by a series ofsupporting brackets 16, the door being provided with supporting rollermechanisms C. j 4

Adjacent the upper margins ofthe doors there is disposed the usualguiding ltrack and weather guard 17 which in the present embodimentconsists of a rolled Z bar secured to the depending flange ofthe member10.

The doors A and B are composed of metal, the main body portions beinorrelatively light gauge, being corrugated or strengthening purposes,and preferably consisting of a plurality of panels for each door. Thepanelling composing the body portion of each door is preferablyfformedin three sections, including upper, central and lower panels, saidpanels comprising`door A, being respectively indicated at 18, 19 and 20,and those composing door B being respectively indicated at 21, 22 and23. The respective doors are of similar construction in so far as theupper horizontal, rear vertical and lower horizontal margins areconcerned, but dier in features of construction relatin to the meetingedges of the doors. Each oor includes a top Z bar 24, and at the rearvertical margin a Z bar 25 having the inner flange thereof lmodified topresent a Ufshaped portion 26 adapted to engage in wedgin relation withflange 27 of an angle mem er 28 carried by the -associated door poststrucpture 11. v

The front vertical margin of door IA in-v cludes a Z bar member 29having its web 30 extending transversely of the door, and one lof theflanges 31 thereof disposedin the inner plane of the door and projectingforwardly lbeyond the web 30 for cooperation with the auxiliary door Bin a manner to-be hereinafter described.l The .outer vertical margin ofthe auxiliary door B consists of an angularly shaped member 32 havingone of j reinforced adjacent its forward margin by a vertically disposedbeam ,member 52, said the'flanges 33 thereof extending transverselyinwardly of the door. The said mar 'nal members 24, 25, 29 and 32 eachhas a ange 34 overlying the body panelling and secured thereto by rivets35, said anges 34 defining substantially the outer plane of theframework of the door. At the upper corners ofthe doors suitable outerand inner gussets are employed,l as indicated at 234 and 334,respectively.

The bottom of the door is formed of tubular shape -for the purposeof.strengthening the door, the formation being the same for both doors.The description therefore will be confined to one door. I n providingthe tubular formation, the lower edge of the bottom panel isdeilectedinwardly to provide a horizontal web 36 and thereafter downwardly toprovide a de nding wall 37 spaced inwardly of the main I[indy of thepanelling. On the inner side of the door a facing plate 38 is providedwhich is offset inwardly and provided with a vertical flange 39 whichlies against the inner side of the panelling and is secured thereto byrivets 40. The facing plate 38 adjacent the lower margin of the door isoffset inwardly and extends downwardly to provide a depending flange 41,said dependingl flange abutting against dependin flange 37 and unitedthereto by full heade rivets 42. Said late 38 is further secured to themargins o the doors by brackets 238. There are at least two rollermechanisms C per door, but since they are the same in wall sections 44and 45, respectively, overlyinglthe main body section of the panellingland the inwardly oi'set depending wall 37,

and 'riveted to these portions by rivets 46. The walls 44 and 45 areunited by transverse integral wall sections 47, thereby forming incooperation with said first named walls a boxlike section within which aroller 48 is disposed. Said walls 44 and 45 are extended downwardlybelow the transverse wall to provide walls 244 and 245 which straddlethe channel members, said walls cooperating with the vertical walls150--150 of said channel member toprevent undue outward or inwardmovement of the door. The roller is mounted on a pin 49 which is carriedby the wall sectionsy 44 and 45 and maintained against displacementrelatively thereto by a rivet 50. a The roller 48 is extended upwardlyinto the plane of the mainbody section of the door which is dishedinwardl at this oint, as indicated at 51, thus provi ing for t e use ofa large roller without the necessit for cutting away the platepanelling, it ing understood that the overlying walls of the housingcompensate in strength for the dished-in portion of the panelling.

On its inner face, the auxiliary door B is member preferably consistinof an H-beam with one set of flanges 53 lylng against the `bervextending transversely of the door.

Rigidlysecured to the inwardly spaced sei;

of flanges 54 is a nailing block 56 adapted tov form a nailing means towhich ain doors may be secured, said member bem secured` to both of saidanges by a series o bolts 57, thebolts in the respective {ianges beingprefs* lerably .arranged lin staggered relation. On

llfl

the outer or'forward side or' the transversely extending web of the beammember, there is riveted or otherwise secured an angularly shaped member58 having one of its anges 59 extended in the general plane of the doorand adapted to overlap the projecting iange 31 on the door A when thedoors are in meeting relation, said flange 59 being ared at its outerend as indicated at 60, to assist in guiding the doors into meetingrelation. With the doors in fully closed position, the marginaltransverse wall 33 of door B is in abutting relation with the transversewall of door A, thereby providing substantially abutting surfaces and aweatherproof joint at the meeting edges of the doors. The forward flangeof the beam member 52 is disposed inl the angle presented by the doorpanelling, and the transversely extending flange 30 and filler castings61 are interposed in the space intermediate the beam member and saidtransverse flange 30.

The doors are further braced on the inner sides thereof by diagonallyextending 5 channel shapedbraces 62 which extend from the lower sectionof each door to the vertical marginal reinforcements, the brace leadingtothe H-beam member having a flanged portion offset as at 63 to overlieone of the flanges l and is riveted thereto and to the door plate byrivets 64. Y

The strengthening indentations in the body panelling include horizontalcorrugations 65 which extend clear across the door intermei diate theoverlying flanges 34 of the respective front and rear vertical marginalmembers. The horizontal reinforcements are diy vided at a certain pointof the door B for the reception of a cardboard indicated conven- 7tionally at Y 66 andthe door is reinforced across the plane of the saidboard by a channel shaped member 67 disposed on the inner side ofthedoor. As best shown in Figures 7 to 10, inclusive, the corrugations areformed in the panelling in such a manner that the crest'portions 68extend a considerable distance outwardly beyond the outer' plane or faceof the door, andthe valley'portions 69y are disposed inwardly .thereofso as to permit the same to be secured to the 'H beam mem' ber 52 and incertain locations to the diagonal braces 62, by riveting, as best shownin Flgure v1.l The crest portions 68 are each formed 'with a flatportion of considerably greater width than the fiat valley portions 69,thus presenting increased strength at a point considerably to one sideof the main plane of the door and thereby enhancing its resistance totransverse bending or buckling stresses. The offsetting in this mannerof a flat portion of extended width to a considerable distance from themain plane of the'plate is attended lwith considerable stretching of themetal and sometimes results in tearing of the metal, especially when themetal is of thin section. I

have therefore provided a novel form of connecting wall section betweeneach flat crest and Hat valley sections, whereby Kthe major portion ofthe stretching will be confined to that area of metal'lying between saidHat crest and valley portions, and to this end the connecting portionswhich truss the crest and [length greater than one-half the depth of thecorrugation, providing for uniform4 stretch of the metal throughoutthe/length of the arcs and thus obviating a usual cause of tearing inthe corners of corrugations. By thus formmg the arcuatesportions on alarge radius adjacent to fiat portions of generous width, it

is possible to confine the necessary stretch of metal t the arcuateportions, inasmuch as the initiation of a bending action in the platecauses the outer bres to stretch, and further distortion of the platewill naturally occur at the oints of least resistance. With the stretcing of the plate restricted to the curved sections 7 and 7l, theintervening fiat sections therefore retain substantially the maximumlate section, and said'iiat plate sections, y reason of beingappreciably spaced from neutral axes 74 and 75 of the corrugations,effectively act as beams to prevent buckling or outward bending of thecorrugations. The respective centers of -the radii 73, defining the opositely disposed arcuate sections 70 and 7) 1, are spaced apart agreater distance than the combined length of said two radii, thusproviding for the inclusion of the fiat section 72 intermediate thecurves, and confining the stretching of the material to 7arcs ofapproximately 60 as indicated at 6.

AThe corrugations adjacent their ends decreasein depth as indicated at77, and said decrease in depth is accompanied by a correspondingdecrease in the size of the connecting curves so that the respectivecurved sections 70 and 7l gradually decrease in size from a maximum atthe point of maximum section of the corrugation to a common vanishingpoint atthe extreme end of the cor rugation as indicated at 78. Saidoppositely disposed curved-sections, due to the gradually decreasingsize of thecurves from a maximum to a vanishin point, assume oppositeldisposed cone-li e sections as indicated y 79 and 80, respectively,saidsections bein separated by a flat wall section481 whic alsoldecreases and finally 'merges in'to the common vanishing point 7 6whichyalso constitutes'the ,apex of the cone-like sections79 and 80.'vThe flat-crest eect for vthe outer portion of the Cil j ing pin 92adapted to maintainthe bolt in corrugation is continued clear to theends vof.

the corrugations, said corrugations at their extreme ends being ofappreciable width'as indicated at 82, but of slightly reduced width ascompared with the main body of the corrugation, the extent of saidreduction in Width being only that necessary to produce a true conicalformation for the outer sections 79 and 80, and therefore the extremeouter boundary of said flat portion coincides with thev vanishing point78, the latter being determined by prolongation of the bisecting line 83of the outer curved section 70 until the said line intersects the main'plane of the plate. The corrugations .having crests of appreciablewidth at their extreme ends, coupi led with the fact that saidcorrugations commence immediately adjacent the overlying fianges of thevertical marginal members, asg sures adequate strength adjacent `theauxiliary marginal members and overcomes a weakness common to allmetallic doors of which I have knowledge.

It will thus be apparent that by .restricting the stretching of thematerial to the curved sections and by gradually reducing the same asthe corrugations reduce in depth, that a construction is obtainedwherein the stretch of material is uniform 'throughout the entire lengthof the corrugation and bunching of metal Aat the ends lof thecorrugation Aprevented.

The auxiliary door is provided adjacentits meeting edge with anchoringmeans which preferably consists of upper and lower sliding bolts, asindicated at 84 and 85, said bolts being respectivly movable 'intoengagement with sockets 86 and 87, respectively disposed on the carstructure adjacent the u'pper and 'lower portions of the door. .Saidbolts are preferably mounted in substantialalignment with onevertical'row of rivets connecting the beam member 52 with the. doorplate, whereby strains against the door will be communicated'squarelyvto the rivet heads. Said bolts and flanges 53'and 54 of saidmember.` Brack. et 89 is disposed at an appreciable distancey from thetop of the door, respectively secured to the web 55 and adjacent flange53 of the' H member. Said member is further provided with a ledge 96 onwhich a laterally extending head 91, formed integrally'with the upperbolt 84 is adapted to seat. Cooperable with said laterally extendinghead isa slidlockedv position. A bracket 98 is; secured to the web ofthe H member for supporting said bolt when in inoperative position.,v

Abolts to to one o the transverse walls 111 and to the outwardly, spacedwall 114 are brackets 117,

The lower bolt is slidably mounted in bracket 94, said bracket beinmounted on the youter face of the `fianfre 54 o member 52 and is rovidedwith a ledge on which a lateral extending head 96, formed integrallywith the said bolt, is adapted to seat to maintain the bolt ininoperative position. While I have shown the sliding bolts on the sideof the post member inwardly from the edge of the door, it will beunderstood that the same may be applied on the opposite side of thepost.

In the construction shown in Figure 3, the doors are of similarconstruction except that the overlying flange of the angle member 59 isdisposed on the opposite side of the projecting flange 31 of the Zshaped member from that shown in Figure 2.

In the embodiment shown in Figures 11 to 13, inclusive, my improvementsare shown in connection with a different embodiment of vindicates theoutwardly spacedwall and a "nailing block 'secured to the outwardlyspaced wall by bolts 116, one of the walls 111 having perforations 211in line with the errnitA access to the nuts. Secured 118 and 119,thebracket 117 forming a carryingf member for lower sliding bolt 1 20and brackets 118 and 119 forming' carrying members for upper slidingbolt 121. The sliding bolts 120 and A121 are formed with laterally'extending heads 122 adapted to respectively cooperate with ledges 123and 124, respecj tively, .formed on brackets 117 and 119 to maint-amAthe sliding bolts ina given posiare mounted 1n positions to be readilyvisible .tOIl- .Cooperating Withthe head 122 0f slid" ingbolt 121to-maintain the same in projected position is a detachable pin member125. The respective sliding bolts 120 and 121 are disposedin'substantial alignment with one ofthe vertically extending rowsV ofrivets 118,

and transversely in line with6 the reinforced marginal portionv of thedoor, whereby the strains are transmitted directly to thestrong` estportion of the door. The locking bolts are shown adjacent theoutercorner of the post with the laterally extending heads extending inthe plane of the wooden block.

' While Ivhave herein shown and described what I nw consider thepreferred mannerof carrying out -myinventiom'the same' is merely.illustrative and I contemplate all changes and-modifications that comewithin the scope of the claims appended heretol 4 .Iv claim Egnellingandthe transverse flange, said beam l f5' member and having t ecorresponding flange 1. A door of the character described includingmetallic panelling and a front marginal member having a flange overlyingsaid panelling, and an H-beam member on the inner face of the doordisposed with the web thereof extending transversely of the door,

ysaid beam being secured to the door by the anges on opposite sides ofthe web, one of said flanges being secured to the overlying .ing aiiange disposed transversely of the door' land having the adjacentflange overlying one of the iianges of the H-beam and secured thereto.

` 3. In a railway car, vmain and auxiliary sliding doors adapted to meetwith transversely extending marginal walls in abutting relation, one ofsaid doors having an H-beam Lmember secured b one set of flanges on theinner side of the oor ad'acent the free edge thereof, and the other ofsaid doors-havin its outer ed e defined by a 'Z bar section wit one liane t ereof disposed rearwardly in the plane o the H-beam when said doorsare in closed position, and an angle shaped member secured by .one ofits flanges to the web of the H-beam and having the other flange adaptedto cooperate with the rearwardly disposed flange of the Z bar on thecompanion door to provide a tight joint. f

4. A door of the character described, in-

. cluding metallic panelling and having front and rear vertical marginalmembers of ap- \preciable depth, said front marginal memberA fincludinga transversely extending wall and an angularly related flange overl .ingthe panelling; an H-beam member on t e 1nner face of the door disposedadjacent the front edge of the door in the angle presented by the ingdis osed with theweb extending transversely o the door and having oneflange secured to the overlyin Bange of the marginal on the oppositeside of the web secured tothe door panelling; and horizontalcorrugations oifset'from the main body of the panelling and extendingfrom the marginal angular Y member across the plane of the beam member.

5. In a'sliding car door, the combination witha Abodysection including`metallic panellin said panelling at thelower margin of theldoor-f;beingflbentinwardly and thence4 downwardly to present aninwardly extending section spaced inwardly v`from said main tion thereofvprojecting in the plane of the 'main body section, said body sectionhaving a portion thereof offset inwardly to accommodate the projectingportion of the roller; and a roller supporting housing having wallsections'overl ing the inwardly offset portion of the bo y section andadapted to reinforce the door across the planeof said offset portion.

6. In a sliding car door, the combination with a marginal framework ofappreciable depth; of panellin disposed substantially in the outer planeo the door, a'facing place disposedsubstantially in the inner plane ofthe door, said facing plate and body panelling being deflected inwardlytowards each otherV and formed with depending flanges adapted to beriveted together, said depending flanges and Ithe rivet heads beingdisposed within the plane' of the door; door carrying brackets securedto the outer face of the panelling and to the depending flange thereof;and rollers carried by said brackets, said rollers being disposed in the'plane of the main body portion of the anelling, said panelling beingoffset inwardly to provide a dish shaped recess within which the rolleris accommodated, said door brackets being provided with wall portions toreinforce the door at the inwardly offset portion.' l

7. In a car door having metallic plates, reinforcing corrugations in theplates formed by offsetting portions of the plates, said corrugationsxincluding flat valley portions in the original plane of the plate andfiat crest portions lying outwardly of the original plane of the plate,said fiat crest portions being of greater width than the valleyportions, said Arespective flat crest portions and valley portions beingunited by connecting portions each consistin of oppositely` disposedcurves and a flat wa section between said curves, each of said curvesbeing formed of greater radii than half the depth of the corrugation,said respective curves being tangentially disposed relatively to thelast named flat portion and .to the flat valley and fiat crest portions.

plate and flat crest portions lying outwardly v portion; of. asupporting roller at the lower -margin of the door, said roller having aporof the original plane of the plate, said flat crest portions being ofgreater width than the valley portions, said respective fiat crestportions and valley portions having oppositely disposed arcuate sectionstangentia osed relatively thereto, said arcuate portions ing eachformed-on radii greater than one; half the depth of the corrugation,said arcuate sections associated with adjoining iat ly disl the originalplane of the panelling, said fiat crest portions being'of greater widththan the flat valley portions, said respective flat crest and flatvalley portions being united by connecting portions each includingoppositely disposed arcuate sections and a flat Wall sectionintermediate said arcuate sections, each of said corrugations being ofuniform section for the major portion of its length and adj acent itsends decreasing in depth and vanishing in the original lane of thepanelling, said fiat crest portion t roughout the portlon of decreasingdepltlh also decreasing in width and at its vanis 'ng point being ofsllghtly reduced width, sald op ositely disposedarcuate sections andinterme iate flat portion also decreasin correspondingl with thedecrease in dept of the corrugatlon and vanishing at a common point oneach side ofthe corrugation.

10. In a car door having metallic panelling, reinforcing corrugations inthe anelling formed by offsetting portions ofv t e panelling, saidcorrugations includin fiat valley portions in the original plane of t epanelling and fiatv crest portions lying outwardly of the 'originalplane of the panelling, said crest I portions being of appreciable widththroughout the entire length of the corrugation from end to end thereof,said respective fiat crest portions and valley pdl-tions being united byconnecting portions, each of said` connectin portions consisting ofoppositely 'disposed arcuate sections and an intermediate flat wallconnectlng section; each of `sa1d corrugations beingof uniform sectionfor the major portion of4 its length and adjacent ,its ends decreasingin depth and vanishing in the ori inal plane of thepanelling, saidopposite y disposed arcuate sections decreasing with the Y depth of saidcorrugation whereby thearcuate fob sections at the portion of reduceddepth are' f conical shape with their apices merging with the flat crestportion at the end of the corrugation.

1,1. A door of the character described having a body portion ,ofmetallic. panelling, flangedA reinforcing membersfatthe vertical:margins of the door, said members having .iiangesvy overlying andsecured to the outer edges of the panelling; a' series of horizontallcorrugatlons extendingjbetween the ilange's,

portions, said respective flat crest and flat valley portions beingunited on each side by connecting ortions, said connecting portionsconsistlng of oppositely disposed arcuate portions and a flatsection-between said arcuate portions, said respective arcuate portionsbeing tangentially disposed relatively to the last named fiat portionand the flat valley and flat crest portions, said corrugations adjacenttheir ends decreasing in depth and vanishing in the original plane ofthe plate .immediately adjacent the overlying lianges of the verticalmarginal members, the arcuate portions and intervening iiat section oneach side of the corrugation decreasing in proportion to the decrease indepth of the corrugation and merging in the original plane of the plateat the vanishing line o f the flat crest section.

12. In a car door having metallic panelling, reinforcing corrugations insaid anellin formed by offsetting a portion ofp the pane ling, saidcorrugations including flat valleyT portions in the original plane ofthe panelling and flat crest portions lying outwardly of the originalplane of the panelling, said respective flat crest and fiat valleyportions being united by connecting portions which include oppositelydisposed arcuate sections and a flat wall section intermediate saidarcuate section, the outer ofrsaid arcuate sections adjacent the crestportion presentin an arc defined by a radius greater than one' alf thedepth of the corrugation; each said corru ation being of uniform sectionfor the major portion of its length and adjacent its ends decreasing indepth and vanishlng in the original plane of the panel-l ling; said fiatcrest portion at the extreme end of the corrugation being of appreciablewidth but of slightly reduced width as compared with the main flat crestportion,each .extreme outer corner of .said fiat portion at itsvanishing point in the original plane of the panelling coincidingsubstantially with a point determmed by the intersection of a prolongedline bisecting the outer arcuate -section and passing through the centerof `the said paneling, a series of horizontal corrugatiohs extendingbetween the said vertical ianges, said corrugations having fiat valleyportions disposed in the-original plane of the plateand'flatcrestportions lying outwardly of the orlgmal plane of the platez `saidflat crest portions being of greater width than the flat valleyportions, said corrugations adjacent their outer ends decreasing indepth and vanishing into the original plane of the plate immediatelyadjacent the overlying flanges of the vertical marginal members, saidflat crest portions of each corrugation adja cent its 'vanishing linebeing of appreciable width; and a beam member onthe inner side of thedoor having a flat wall section overlying the vertical ange andextending into the plane of the corrugation, said member effectingcontinuity of reinforcement between aid corrugations and verticalmarginal mem- 14. 4In a door of the character described having the Imainportion thereof formed of metallic panelling; ianged reinforcing membersoverlying the vertical edges of the said panelling; and a series ofhorizontal corrugations extending between the said vertical members,said corrugations having flat valley portions disposed in theoriginalplane of the plate and fiat crest portions 'lying outwardly ofthe original plane of the plate, said flat crest portions being ofgreater width than the flat valley portions, said corrugations adjacenttheir outer ends decreasing in depth and vanishing in the original planeof the plate immediately adjacent the overly'- ing flanges of thevertical marginal members, said flat crest portion of each corrugationadjacent itsyvanishing line being of appreciable width.

15. In a railway car,-the cdmbination withy a main door and an auxiliarydoor; of a reinforcement for the outer edge of the auxiliary door, saidreinforcement including a member having flanges overlying the inner faceof the door and wallmeas spaced away vfrom the inner face of the door,said member including a transversely extending wall? section connectingsaid flanges and wall means; bracket means overlying said transversewall section and spaced wall means and secured to both said vwallsection and wall means; sliding bolt means carried by said bracketmeans; and socket means onthe car structure cooperating` with said boltmeans to maintain the doorin adjusted position.

16. In a structure of the character dei scribed, the combination/with amain door and 'an auxiliary `door, said auxiliar door being providedwith a door post mem er extendingrearwardly therefrom, said memberincluding wall sections in the general planeof the doorfone 'of saidwall sections overlying the inner face of the door and the other ofsaid,wall sections being spaced inwardly j away from the inner plane ofthe door, transversely extending wall means between said respectivewalls, said overlying walls pre# Ysentinglanges on each 'side oftheytransversely extending wall means whereby the member is rigidly mountedonthe'door; a

sliding locking bolt member mounted on said member, said member beingmounted in 17. In a'structure of the character described, thecombination with a main door and an auxiliary door, said auxiliary doorbeing provided with a door post member extending rearwardly therefrom,said member including wall sections extending in the general plane ofthe door, one of said wall sections overlying the inner face of the doorand the other of said wall sections 'being spaced away from the innerplane of the door, transversely extending wall means between saidrespective walls, said overl ing walls presenting flanges on each side othe transversely extending wall means, whereby said member is rigidlysecured to the door on each side of the transversely extending wallmeans by a line of vertical rivets; and sliding bolt means mounted onsaid' post member for reciprocatory movement, said bolt means beingmounted substantially in alignment with the line of rivets securing*lthe ange to the door; and pocket means on the car structure adapted tore'ceive the bolt .jeans to maintain the door in adjusted position. l

18. In a railway car, the combination with a main door and an auxiliarydoor; of-a re# inforcement for the outer edge of the auxiliar door, saidreinforcement including an H- eam member, said reinforcement beingVdisposed adjacent the front edge of the auxiliary door on the inner sidethereof, with the lweb thereof extending transversely of the door, saidbeam member being secured to the door on each side of the web by a setof flanges, thereby spacing the other set of flanges at an appreciabledistancea from the inner face of the door, a wooden nailing blockvsecured to the last named set of flanges; sliding lockhaving aynailingblock disposed substantialinsl ly flush with the forward edge of saiddoor and offset inwardly thereof,y and a post for said auxiliary doorincluding a flat plate section extending rearwardly from the forwardedge of the door an 'appreciable distance, and secured flat-wise againstthe inner surface of the body portion of said door, and also having aspaced plate ysection sup-V porting said nailing block, and a web connecting said spaced plate section and offset rearwardly from the forwardedge of said door; and a reinforcing element on said main door andhaving a projecting iange portion extending between said plate sectionsand inwardly ofthe plane defined by the forward edge of said door andthe forward portion of said nailing block.

10 20. In a door structure of the character l f' described, thecombination with main and auxiliary sliding doors, said auxiliary doorhaving a nailing block disposed substantially flush with the forwardedge of said door and offset inwardly thereofP and a post for saidauxiliary door includlng a fiat plate section extending rearwardly fromthe forward edge ofthe door an appreciable distance, and securedflat-wise against the inner surface of the body .portion of said door,

and also having a spaced plate section supporting said nailing block,and a web connecting said spaced plate section and offset rearwardlyfrom the forward edge of said door; and a reinforcing element on saidmain door and having a projecting flange portion extending between saidlplate sections and inwardly of the plane defined by the forward edge ofsaid door and the forward portion of said nailing block, saidreinforcing element being in the form of a Z-bar having its transverseweb providing an abutting surface; and a reinforclng element secured tosaid auxiliary door and said post at its forward edge and yincluding atransversely extendingflange forming an abutting surface cooperable withthe web of said Z-bar.

In witness that I claim the foregoing I have hereunto subscribed my namethis 31st day of May, 1929.

` GEORGE B. DOREY.

